Oil-motor-driven locomotive



July 17, 1928. 1,677,704

J. BUCHLI OIL MOTOR DRIVEN LOCOIOTIVE Filed Aug. 27, 1926 Patented July 17, 1928 JACOB BUCHLI, OF WINTERTHUR, SWITZERLAND.

OIL-MOTOR-DRIVEN LOCOMOTIVE.

Application filed August 27, 1926, Serial No. 131,952, and in Germany October 26, 1925.

The present invention relates to improvements in oil-motor driven locomotives and particularly to the arrangement of the cylinders of the internal Combustion engine in Diesel locomotives of large output. I

The arrangement of oil motors of large output on locomotives presents. considerable difliculties which are overcome by the present invention. Up to theipresent the following types oi motors have been utilized on locomotives: Vertical motors with cylinders arranged in one line, motors with cylinders arranged in V-fashion or horizontalmotors with their crank shaft parallel or transverse to the axis of the locomotive and their cylinv ders staggered, in the known manner. All these arrangements present the important disadvantage that it is impossible to install motors 01 large outputs as the spacerequired and the weight of motors built in this manner are excessive.

The novel arrangement makes it possible in the same plane extending at right angles to the longitudinal centre plane of the locomotive or with their axes in alignment when the cylinders are horizontally disposed, the cylinders working on a crankshaft common to all the cylinders and arranged in the longitudinal centre plane of the locomotive. An important advantage of this arrangement consists in the fact that the valves and the valve gear are situated at the outer side so that they are easily'accessible and re movable. The valve gear may be so arranged and enclosed that its noise does not annoy the. attendants on the locomotive nor other people. Further this horizontal arrangement of the cylinders permits a good utilization of the available space and the provision of only one drivers cab as the driver has an unobstructed view over the group of cylinders. Thereby a further saving in weight results. The provision of two lateral gangways above the engine on the locomotive is possible as no apparatus has to be placed there. The crank shaft may be easily removed and all the bearings are readily accessible from above.

As the number of pairs ofopposed'cylinders, which form the elements of which the engine '18 composed, may be chosen accordmg to thedesired. output a very wide range of power may be provided, byjoining a greater or smaller-number of such elements to each other. g

Constructional examples of the subject matter of the present invention are diagrammatically illustrated on the accompanying drawings, in which: v i

Fig. 1 shows in elevation-the arrangement of the cylinders of the oil motor on a locomotive,

Fig. 2 shows this arrangement in a plan view and I I Fig. 3 in'a cross-section of the locomotive.

I Fig. 4:. shows the same'arrangement of the. cylinders of the 011 motor as in Fig. 1;

however difi'erent means for transmitting the output of the motorto the driving axles are diagrammatically indicated, and

Figs. 5 and 6 show the connecting rods of the pair of opposed cylinders.

The oil motor 1 is composed of a number of pairs of cylinders 2, 2, 3, 3 and so on, the

cylinders of each pair being arranged opposite each other with their axes in alignment and all the cylinder pistons 'WOI'k on one common crank shaft 10 extending in the longitudinal direction of the locomotive. Thev latter is connected by means of the cou- ,pling 11 to the "gear 12 and'the drive of'the axles 13 of the locomotive is effected by means of the shaft 14 and gear wheels arranged inthe casings 15.

The cylinders '2, 2, 3, 3 and so on are arranged in pairs and each pair forms an element. The oil motor can be readily built of any output by joining any desired number of such elements one beside the other.

Fig. 4 showsv a locomotive in which the cylinders of the oil motor are arranged in the same manner as 1n Fig. 1, i. e. in pairs 2, 2, 3, 3. Instead of the transmission gears interposed between the engine crank shaftand the driving axles electric transmission is installed. rectly coupled with-an electric generator 16 and the current generated is used in electric motors 17 which drive on the driving axles by means of the gear'wheels 18, 19. c

In 5 and 6 the two connecting rods or pitmen of a pair of opposed cylinders are The oil motor is di- I illustrated in a side view and in a plan view with parts shown in section respectively. Each two cylinders of the pair work on the same crank of the crank shaft and the tWo connecting rods and 21 have a connecting rod head which is common to both rods. Each connecting rod is provided at its one end with a closed head 22 adapted to cooperate with the piston pin and at its other end with a bearing segment 23 cooperating with the crank pin and provided'with an antifriction lining 2a. The two bearing segments 23 are embraced by two bi-partite coupling members 25 provided with an anti friction lining 26 against which the outer faces 01 the segments 23 bear. The two parts of the coupling members 25 are held together by bolts 27.

The feature that each pair of opposed cylinders drives on the same crank shaft permits a very considerable reduction in the space required by the engine in the longitudinal direction so that a large number of cylinders can be placed in the available space.

I claim:

1. An internal combustion engine for Dieeel-locomotives of large output having a plurality of cylinders arranged on both sides of the longitudinal centreplane of theloco motive, each pair of cylinders arranged opposite each other havingtheir aXesin the same plane extending at right angles to the longitudinal axis of the locomotive, a crank shai't extending in the longitudinal direction 01' the locomotive and having a plurality of crank pins, and connecting rods for transmitting the power from every cylinder to said crank pins, said connecting rods having at their outer ends segment shaped bearing bushes, and coupling members embracing the bearing segments of the connecting rods of every two opposed cylinders which cooperate with the same crank pin.

2. An internal combustion engine for Diesel-locomotives of large output, comprising a plurality of elements arranged beside each other and ri 'idlv connected to each other crank pins which corresponds to the number of said elements.

In testimony whereof, I have'signed my name to thls specliication.

Jason BUGHLT. 

